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Appearances Can Be Deceiving: Lessons Learned Re-Implementing Axelrod's 'Evolutionary Approach to Norms'
Galán, José Manuel; Izquierdo, Luis R. - In: Journal of Artificial Societies and Social Simulation 8 (2005) 3, pp. 2-2
In this paper we try to replicate the simulation results reported by Axelrod (1986) in an influential paper on the evolution of social norms. Our study shows that Axelrod's results are not as reliable as one would desire. We can obtain the opposite results by running the model for longer, by...
Persistent link: https://www.econbiz.de/10004983476
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Reply to Will and Hegselmann
Macy, Michael; Sato, Yoshimichi - In: Journal of Artificial Societies and Social Simulation 11 (2008) 4, pp. 11-11
[No abstract]
Persistent link: https://www.econbiz.de/10005518637
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A Replication That Failed - on the Computational Model in 'Michael W. Macy and Yoshimichi Sato: Trust, Cooperation and Market Formation in the U.S. and Japan. Proceedings of the Na...
Will, Oliver; Hegselmann, Rainer - In: Journal of Artificial Societies and Social Simulation 11 (2008) 3, pp. 3-3
The article describes how and why we failed to replicate main effects of a computational model that Michael Macy and Yoshimichi Sato published in the Proceedings of the National Academy of Sciences (May 2002). The model is meant to answer a fundamental question about social life: Why, when and...
Persistent link: https://www.econbiz.de/10004983510
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Cooperation in the Prisoner's Dilemma Game Based on the Second-Best Decision
Ohdaira, Tetsushi; Terano, Takao - In: Journal of Artificial Societies and Social Simulation 12 (2009) 4, pp. 7-7
for the emergence of cooperation is generally discussed. The most well-known solutions for this question are memory based … temperate acquisitiveness in decision making could be possible to achieve cooperation. It was already shown in our previous … game and also in that of extended strategy expression. The cooperation of this extended game is facilitated only if the …
Persistent link: https://www.econbiz.de/10008461566
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The Evolution of Multiple Resistant Strains: An Abstract Model of Systemic Treatment and Accumulated Resistance
Nye, Benjamin D. - In: Journal of Artificial Societies and Social Simulation 16 (2013) 4, pp. 2-2
The proliferation of resistant strains has been an unintended side effect of human interventions designed to eliminate unwanted elements of our environment. Any attempt to destroy an adaptive population must also be considered as a selection pressure, so that the most resistant members will...
Persistent link: https://www.econbiz.de/10010704430
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Sendero: An Extended, Agent-Based Implementation of Kauffman's NKCS Model
Padget, Julian; Vidgen, Richard; Mitchell, James; … - In: Journal of Artificial Societies and Social Simulation 12 (2009) 4, pp. 8-8
The idea of agents exploring a fitness landscape in which they seek to move from 'fitness valleys' to higher 'fitness peaks' has been presented by Kauffman in the NK and NKCS models. The NK model addresses single species while the NKCS extension illustrates coevolving species on coupled fitness...
Persistent link: https://www.econbiz.de/10008461568
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Reinforcement Learning Dynamics in Social Dilemmas
Izquierdo, Segismundo S.; Izquierdo, Luis R.; Gotts, … - In: Journal of Artificial Societies and Social Simulation 11 (2008) 2, pp. 1-1
In this paper we replicate and advance Macy and Flache\'s (2002; Proc. Natl. Acad. Sci. USA, 99, 7229–7236) work on the dynamics of reinforcement learning in 2×2 (2-player 2-strategy) social dilemmas. In particular, we provide further insight into the solution concepts that they describe,...
Persistent link: https://www.econbiz.de/10004983474
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Case-Based Reasoning, Social Dilemmas, and a New Equilibrium Concept
Izquierdo, Luis R.; Gotts, Nicholas M.; Polhill, J. Gary - In: Journal of Artificial Societies and Social Simulation 7 (2004) 3, pp. 1-1
agents use a simple form of case-based reasoning. It is shown that cooperation can emerge from the interaction of selfish … case-based reasoners. In determining how often cooperation occurs, aspiration thresholds, the agents' representation of the …
Persistent link: https://www.econbiz.de/10004983541
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How Evolutionary Dynamics Affects Network Reciprocity in Prisoner’s Dilemma
Cimini, Giulio; Sanchez, Angel - In: Journal of Artificial Societies and Social Simulation 18 (2015) 2, pp. 22-22
Cooperation lies at the foundations of human societies, yet why people cooperate remains a conundrum. The issue, known …
Persistent link: https://www.econbiz.de/10011220325
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The Evolutionary Dominance of Ethnocentric Cooperation
Hartshorn, Max; Kaznatcheev, Artem; Shultz, Thomas - In: Journal of Artificial Societies and Social Simulation 16 (2013) 3, pp. 7-7
possible strategies (selfish, traitorous, and humanitarian) based on cooperation or non-cooperation with in-group and out … humanitarian cooperation across group boundaries as world population saturates. Selfish and traitorous strategies are self … unreciprocated cooperation. By tracking evolution across time, we find individual differences between evolving worlds in terms of …
Persistent link: https://www.econbiz.de/10010671700